The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2011
Filed:
Jul. 20, 2006
Applicants:
Gordon Docherty, Birmingham, GB;
Graham Good, Oldbury, GB;
Sheena Jackson, Birmingham, GB;
Inventors:
Assignee:
Rhodia UK Limited, Watfordhertfordshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Bisphosphines are prepared by reacting a phosphine with a dihalide in the presence of an acid; characteristically, bisphosphonium compounds are initially formed and then converted into the bisphosphines.